What is the CVSS score of EUVD-2026-12443?

EUVD-2026-12443 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Mattermost Server are affected by EUVD-2026-12443?

CVE-2026-24692 presents moderate security risk, a incorrect authorization vulnerability rated CVSS 4.3. Attackers could gain access beyond their authorized level.. A patch is available.

How to fix or mitigate EUVD-2026-12443?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Mattermost Server EUVD-2026-12443

| CVE-2026-24692 MEDIUM

Incorrect Authorization (CWE-863)

2026-03-16 responsibledisclosure@mattermost.com

GHSA-cwfj-642j-gfh4

Authentication Bypass Mattermost Server Suse

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

SUSE

MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

EUVD ID Assigned

Mar 16, 2026 - 15:30 euvd

EUVD-2026-12443

Analysis Generated

Mar 16, 2026 - 15:30 vuln.today

CVE Published

Mar 16, 2026 - 15:16 nvd

MEDIUM 4.3

DescriptionCVE.org

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly enforce read permissions in search API endpoints which allows guest users without read permissions to access posts and files in channels via search API requests. Mattermost Advisory ID: MMSA-2025-00554

AnalysisAI

A remote code execution vulnerability (CVSS 4.3) that allows guest users without read permissions. Remediation should follow standard vulnerability management procedures.

Technical ContextAI

CWE-863 (Incorrect Authorization).

RemediationAI

Monitor vendor channels for patch availability.

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Vendor StatusVendor

SUSE

Severity: Medium

Product	Status
openSUSE Leap 15.6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
openSUSE Leap 15.5	Fixed

EUVD-2026-12443 vulnerability details – vuln.today

Back

Mattermost Server EUVD-2026-12443

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More in Mattermost Server

Same weakness CWE-863 – Incorrect Authorization

Same technique Authentication Bypass

Vendor StatusVendor

SUSE

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External POC / Exploit Code